For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
In terms of how long a dolphin can dive for some dolphins are able to hold their breath for up to 20 minutes before coming up for air while other dolphins are only able to hold their breath for 5 â 7 minutes.The length of time that a dolphin can hold its breath for varies from one species to the next.n terms of how long a dolphin can dive for some dolphins are able to hold their breath for up to 20 minutes before coming up for air while other dolphins are only able to hold their breath for 5 â 7 minutes.